
Declarations and Certificates
ZS4-SF1 Screw Clamp Terminal Blocks
For 5 x 20 and 5 x 25 fuses
Protect your circuit with 5x25
and 5x20 fuse terminal blocks,
compliant with IEC 60947-7-3
standard (fuse not supplied
with the terminal blocks).
Screw Clamp
Terminal Blocks
3D CAD outline drawings available on
"Control Product 3D" portal

Declarations and Certificates
Explosive Atmosphere: ATEX Classification
Connecting capacity per clamp
1 Flexible conductor with insulated
ferrule
1 Flexible conductor with non
insulated ferrule
Ferrule maximum outer diameter or conductor
insulation maximum outer diameter
Screw clamp
TH 35-7.5, TH 35-15
Screw rail contact
(Maximum value)
As part of its on-going product improvement, ABB reserves the right to modify the characteristics or the products described in this document.
The information given is not contractual. For further details please contact the ABB company marketing these products in your country.
In the presence of explosive dust atmosphere, terminal blocks are to be installed in certified enclosure II 2D
The following information must be strictly adhered to in order to guarantee the terminal block electrical, mechanical and environmental performance.
1 Rigid - Solid / Stranded conductor
The "Connecting capacity with ferrule" data is guaranteed with ABB crimping tool PS-3 (crimping capacity up to 10 mm²).

Multi Connecting capacity per clamp
Electrical characteristics
Field and factory wiring Cat.2
Factory wiring Cat.1
0.5 s
5 s
10 s
30 s
1 min
Short Circuit Current Rating (SCCR) SA UL 1059 supplement
Suitable conductor wire range
Maximum voltage
Fuse class / Max. amp. Rating
As part of its on-going product improvement, ABB reserves the right to modify the characteristics or the products described in this document.
The information given is not contractual. For further details please contact the ABB company marketing these products in your country.
Don't mix solid and flexible conductors in the same clamp
Rated short-time withstand current 1 s (Icw)
Don't mix solid or flexible conductors of different sizes in the same clamp
The "Connecting capacity with ferrule" data is guaranteed with ABB crimping tool PS-3 (crimping capacity up to 10 mm²)
Short-time withstand current
Rated short-circuit withstand current
With the following configurations:
Maximum short circuit current (1s)
Max. current (45° temperature increase) / Max. cross section (mm²)
Rated impulse withstand voltage
2 Rigid - Solid / Stranded
conductors
2 Flexible conductors with twin
ferrule

Rated power dissipation at an ambient temperature of 23 °C - IEC 60947-7-3
Environmental Characteristics
Additional climatic tests
Conditions
Conditions
Conditions
Conditions
Conditions
Conditions
Conditions
Maximum dissipated power at rated current
Maximum dissipated power at maximum Exe current
Separate arrangement /
Overload and short-circuit protection
Compound arrangement /
Exclusive short-circuit protection
Compound arrangement /
Overload and short-circuit protection
Separate arrangement /
Exclusive short-circuit protection
1 fuse and 4 feed-through blocks
Ambient temperature min/max
Number of cycles (1 cycle = 24h)
Current Derating curve for continuous service temperature
Flowing mixed gas corrosion test
Number of the test method
As part of its on-going product improvement, ABB reserves the right to modify the characteristics or the products described in this document.
The information given is not contractual. For further details please contact the ABB company marketing these products in your country.

Conditions
Conditions
Long life testing at increased random vibrations
Conditions
Shock
Conditions
1
Terminal Block Markers
1
1
1
1
1
1
2
2
2
2
2
3
4
4
5
6
7
8
9
9
9
9
9
9
9
9
9
9
10
10
10
11
As part of its on-going product improvement, ABB reserves the right to modify the characteristics or the products described in this document.
The information given is not contractual. For further details please contact the ABB company marketing these products in your country.
ZS4-SF1 Terminal Block Accessories Compatibility
Some accessories may modify the terminal block's rating. See complete information in the accessories catalog page.
Functional random vibrations
Category 1 Class B 3 axes
Category 1 Class B 3 axes
Category 1 Class B 3 axes